Seiko Cal. 5646 - 780

This Spring Drive model from 1971 features a 38mm Titanium case. With its 20mm lug width and 14.5mm profile, it sits comfortably on most wrists. [seikata-wm-f777150d61b0]

Also known as: Turtle, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

14.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Champagne

Jewels

22j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1971

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